A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6135-01-441-0518
NSN 6685-01-598-1281
NSN 6320-00-218-6105
NSN 5945-00-296-8464
NSN 5915-01-005-0164
NSN 6105-00-765-5644
NSN 6650-00-801-1681
NSN 5996-01-294-6254
NSN 5895-01-487-4990
NSN 6135-01-556-3352
NSN 5930-00-205-2945
NSN 5990-00-519-9974